I have an engine out of an 85 500SEC that I had bought that has a bad head gasket. I swapped it out with another engine and still have this one. It is complete, but does not come with the transmission. I bought the car with 150K miles on it and the engine was in the car at that time. Not too sure of it's history, but I'm sure it would be a great engine to fix up or perhaps use for parts. If interested, email me an offer. I just simply want it out of my garage, as it's taking up space. Thanks.